Extension flush bolt for doors.



E. OHNSTRAND.

EXTENSION FLUSH BOLT FOR DOORS. APPLICATION FILED JULY 29. 191 1.

I I T L WITNESSES :W 22

ATTORNEYS Patented Dec. 7, 1915.

pnrrn snare an anion.

ENOCH GHNSTRAND, OF SYILAGUSE, NEVT YORK, ASSIGNOR IO OLIVER M. EDWARDS,

OE SYRACUSE, NEW YORK.

EXTENSION FLUSH. BOLT FOB DOORS.

Specification of Letters Patent.

Patented Dec. '7, 1915.

Application filed July 29, 1911. Serial No. 641,356.

To ctZZ whom it may concern:

Be it known that I, Enoorr OHNSTRAND, of Syracuse, in the county of Onondagaand State of New York, have invented a certain new and useful Extension Flush Bolt for Doors, of which the following is a speci fication.

This invention has for its object the production of an extension flush lock belt for doors and the like, which is particularly simple in construction and highly eflicient and durable in use; and it consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawing in which like characters desi nate corresponding parts in all the views.

Figure 1 is a fragmentary edge view, partly in section, of a door provided with my invention. Fig. 2 is a sectional view of parts seen in Fig. 1, parts being omitted. Fig. 3 is a rear elevation of mechanism seen in Fig. 2.

This extension flush bolt comprises, a supporting plate, a bolt operating plate carried by the supporting plate and slidable length wise thereof, and an operating lever pivoted to the supporting plate, and having an arm engaging the bolt operating plate, the operating lever and the bolt operating plate also preferably having coacting means for locking the bolt operating plate in either ofvits extreme positions; that is, in either of its positions assumed when the bolt is Withdrawn or when the bolt is in looking position. I

1 is the supporting plate Wl1iCll 'lS usually inserted into the edge face of the door 2 with its upper face flush with the edge surfaces of the door 2.

3 is a bolt operating plate slidable along the rear side of the plate 1 withina recess t in the edge of the door which is closed by the supporting plate, said plate 3 being provided with a coupling piece 5 at one end which is pivoted at 6 thereto, this coupling piece connecting a rod 7 which operates the bolt 8, to the sliding plate 3.

The plate 1 is secured in position by any suitable means as screws 9 and is formed with a lengthwise slot 10 which is closed by the sliding bolt operating plate 3, such plate 3 being movable in a guide formed by ears 11 projecting into the recess i from the plate 1 on opposite sides of the slot 10,

and rods 12 connecting opposing ears 11, the rods 12 bearing against the rear face of the plate 3.

13 is an operating lever pivoted at 14: between its ends to opposite side walls of the slot and movable from either of two starting positions to the other when looking or unlocking the bolt, one arm of the lever, as 15, being arranged to extend through an opening 16 in the sliding plate 3 and slidably engage with the opposite end walls of such opening for shifting the plate 3 to withdraw the bolt 8 from, or project the same into, operative position.

The other arm of the lever 13 is provided with a finger engaging end 17 normally lying in either one or the other of depressions 18 approaching the ends of the slot 10, one side face of the, lever is normally flush with theplane of the face of the plate 1 when the lever is in one of its starting or extreme positions, Fig. 2, and the other face thereof is flush with said plane when the lever has been shifted to its other extreme or starting position to slide the plate 3.

The locking means associated with the bolt operating plate 3 and the lever 13 for holding said plate in either one of its extreme positions comprises a projection on one of said parts 3 or 13 and grooves or sockets in the other of said parts for re ceiving, the projections when said parts are in one or the other of their extreme or starting positions.

As here shown the bolt operating plate 3 is formed with projections or ribs 19 on opposite sides of the opening 16 of said plate 3, and the lever 1.3 is provided with grooves 20 in its front and rear faces for receiving the projections 19 respectively, the grooves being near the pivot 14 of said lever and usually in a plane intersecting the axis of the pivot 14 and arranged at a right angle to the lengthwise axis of the lever 13.

As seen in Fig. 2, when thelever is in either of its starting positions, one of the projections 19 is in one of the grooves 20 so that any pressure applied to the plate 3 will be transmitted to the lever 13, but owing to the relative arrangement of the grooves 20 and the pivot 14:, the lever will not be moved and thus the plate 3 will be held from movement.

In order to prevent the lever 13 from remaining in any position between its extreme or starting positions a spring 21 is parts.

simple in construction and economical in manufacture and consists of a minimum of What I claim is: V 1. In combination, an extension bolt, a

" supporting plate, 7 a bolt operating plate slidably mounted on the supporting plate and provided with a transversely disposed opening, an operating lever pivotally mounted on one side of said operating plate and having a p'art'movable into and out of said opening and cooperating with opposite walls thereof for shifting said plate, a spring mounted on the opposite side of said operat- I ing plate and having a member projecting through said opening andcooperating'with the lever, and a connection between the opcrating plate andthe bolt, substantially as I and forthe purpose described.

2; -Incombination in an extension bolt, a supporting plate, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof, and an operating lever pivoted to the supporting plate and having an arm for slidably engaging the bolt operating plate, the lever'being movable from either of-two starting positions to the other, the bolt operating plate and leverhaving coacting means arranged to come in engagement with each other when the lever is in either of its starting positions for locking the bolt operating plate from movement, said .means comprising projections formed on one 'ofosaid parts and grooves for receiving the projections formed in the other of said parts, substantially as and for the purpose specified.

3. In combination in an extensionbolt, a supporting plate, a'bolt operating plate carried by the supporting plate and slidable lengthwise thereof, and an operating lever pivoted to the supporting plate and having an arm slidably engaging the bolt operating plate, the lever being movable from either of two starting positions to the other, the

bolt operating plate and lever having coacting means arranged to come inengagement with each other when the lever is inreither of its extreme positions for locking the sliding plate from movement, the sliding plate being provided with projections on opposite sides of the lever, and the lever being provided with. grooves in opposite faces-thereof for receiving the projections, substantially as'and for the purpose set forth: 4. In combination in an extension bolt, a

supporting plate having a lengthwise slot, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof and serving as a closure for the slot, the bolt operating plate having an opening 0pposed to the slot, and an operating lever pivoted intermediate of its ends to the supporting plate, the lever being movable in the slot from either of two starting positions to the other, and one arm thereof coacting with opposing walls of said opening, and the lever and the bolt operating plate being provided with means coacting to lock the bolt operating plate in either of its extreme positions when the lever is in either of its starting positions, said means comprising projections on the bolt operating plate on opposite sides of said opening, and grooves in the lever in opposite faces thereof for receiving the projections, substantially asand for the purpose specified.

5. In combination in an extension bolt, a supporting plate, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof, an operating lever pivoted to the supporting plate and movable from either of two starting positions to the other, the lever having an arm rigid therewith and slidably engaging the bolt operating plate, the bolt operating plate and lever having coacting means arranged to come in engagement with each other, when the lever is in either of its starting positions for locking the bolt operating plate from movement, and a spring carried by the bolt operating plate and acting on said arm to move the lever from a central position to either of its starting positions, substantially as and for the purpose described.

6. In combination in an extension bolt, a supporting plate, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof, an operating lever pivoted to the supporting plate and movable on its pivot, the lever being movable from either of two starting positions to the other, the lever having an arm rigid therewith and slidably engaging the bolt operating plate, the last-mentioned plate and lever having coacting means arranged to come in engagement with each other when the lever is in either of its starting positions for locking the bolt operating plate from movement, the locking means comprising projections on one of said parts and a groove formed in the other of said parts for receiving the projections, and a spring acting on said arm of the lever to move the same into either of its starting positions, substantially as and for the purpose specified.

7. In combination in an extension bolt, a supporting plate having a lengthwise slot, a bolt operating plate carried by the supporting plate and slidable lengtlnvisethereof and serving as a closure for the slot, the

1,162,945 l ill bolt operating plate having an opening opposed to the slot, an operating lever pivoted intermediate of its ends to the side walls of the slot, the lever normally lying in the slot, and being reversible on its pivot from either one of two starting positions to the other, the lever having an armrigid therewith and extending into said opening of the bolt operating plate and coacting with opposing walls thereof, the lever and the bolt operating plate being provided with means coacting to lock the bolt operating plate and the lever in either of its starting positions, said means comprising projections on the bolt operating plate on opposite sides of the opening, and grooves provided in the lever in opposite faces thereof near the axle of the lever, the grooves receiving the projections respectively, and a spring carried by the sliding member and acting on said arm, substantially as and for the purpose set forth.

8. In combination in an extension bolt, a supporting plate having a lengthwise slot, a bolt operating plate slidably mounted on the supporting plate and serving as a closure for the slot, the bolt operating plate being formed with a transverse opening, a lever pivoted between its ends to opposite side walls of the slot and movable from either of two starting positions to the other, the lever having one arm extending into said opening and slidably engaging opposing end walls thereof and the other arm thereof lying insaid slot when the lever is in its starting po sitions, the bolt operating plate being provided with projections on opposite sides of the opening therein, and the lever having grooves in its opposite faces for receiving said projections respectively when the lever is in its starting positions, the grooves be ing disposed substantially coincident with a plane intersecting the pivotal axis of the lever and extending at a right angle to the lengthwise axis thereof, and a spring carried by the bolt operating plate and engaging the first-mentioned arm of the lever for moving the same to either of its starting positions, substantially as and for the purpose described.

9. In combination in an extension bolt, a supporting plate, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof an operating lever pivoted intermediate of its length to the supporting plate and having one of its arms engaging the bolt operating plate, and a spring carried by the sliding plate and being fixed at its ends thereto and having its intermediate portion bearing against said arm, substantially as and for the purpose specified.

10. In combination in an extension bolt, a supporting plate having a lengthwise slot, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof and serving as a closure for the slot, the secondmentioi'ied plate having an opening opposed to the slot and extending through front and rear faces of the bolt operating plate, an operating lever pivoted intermediate of its length to opposite walls of the slot and movable from one'of two starting positions to the other, the lever having one of its arms extending into said opening of the bolt operating plate, and engaging opposing walls of the opening, the lever also having an arm adapted to lie in the slot when the lever is in either of its starting positions, and a spring carried by the sliding plate and fixed at its opposite ends thereto, and having its intermediate portion arranged to project through the opening in the bolt-operating plate and engage with the first-mentioned arm of the lever, substantially as and for the purpose set forth.

11. In combination in an extension bolt, a supporting plate having a lengthwise slot, a bolt operating plate carried by the supporting plate and slidable lengthwise thereof and serving as a closure for the slot, the second-mentioned plate having an opening opposed to the slot and extending through front and rear faces of the bolt operating plate, an operating lever pivoted to opposite walls of the slot and movable from one of two starting positions to the other, the lever having an arm extending into said opening of the slidingplate and engaging opposing walls of the opening, the lever also having an arm adapted to lie in reverse positions in the slot, and a spring carried by the sliding plate and fixed at its opposite ends thereto, and having its intermediate portion offset and vengaging with the first-mentioned arm of the lever, substantially as and for the purpose described. 7

12. In combination in an extension bolt, a supporting plate having a lengthwise slot, a bolt operating plate slidably mounted on the supporting plate and serving as a closure for the slot, the bolt operating plate being formed with a transverse opening, a lever pivotally mounted on the supporting plate in the slot and having one arm thereof cooperating with opposing walls of the openand provided with an ofiset portion designed to extend through the opening in the sliding plate and cooperate with the first-mentioned arm of the lever, substantially as and for the purpose set forth.

13. In combination in an extension bolt, a supporting plate having a lengthwise extending slot, a bolt operating plate'mounted on the supporting plate and serving as a closure for the slot, the bolt operating plate being formed with a transverse opening, a lever pivoted between its ends to opposite sidewalls of the slot and movable from either oftivo startingpositions to the other,

the lever having one arm extending into said opening and slidably engaging opposing end Walls thereof andthe other arm thereof normally lying in said slot,the sliding plate being provided Withprojections on opposite sides of the opening therein, and the lever havinghgrooves in its opposite faces for receiving said projections When the lever is in either of its starting positions, the grooves beinglocated near the axis ofthe lever, and a spring carried by the sliding plate and engagingthe first-mentioned arm of the lever formoving the same toeither ofiits starting positions, the springbeing fixed at its ends to the sliding plate and having its intermediate portion formed with an oifset loop projecting into said opening and slidably engaging the first mentioned arm of the lever, substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name in the presence of two attesting Witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 27th day of July, 1911.

ENO CH OHNSTRAND.

WVitnesses:

CHAS. H. YOUNG, S. DAVIS.

Copies 0t thispatent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

